//stack
#include <bits/stdc++.h>

using namespace std;

unsigned long long topPos = 0, temp, _stack[114514];

string actionNameGetter(string);
void __init();

int main()
{
	__init();
	string action;
	int dataGroups, dataCounts;
	scanf("%d", &dataGroups);
	for(int i = 1 ; i <= dataGroups ; ++i)
	{
		scanf("%d", &dataCounts);
		__init();
		for(int j = 1 ; j <= dataCounts ; ++j)
		{
			if(j == 1) cin.ignore();
			getline(cin, action);
			action = actionNameGetter(action);
			if(action == "push") _stack[topPos++] = temp;
			else if(action == "pop")
			{
				if(topPos == 0) printf("Empty\n");
				else topPos--;
			}
			else if(action == "query")
			{
				if(topPos == 0) printf("Anguei!\n");
				else printf("%llu\n", _stack[topPos - 1]);
			}
			else if(action == "size") printf("%llu\n", topPos);
		}
	}
	return 0;
}

string actionNameGetter(string s)
{
	temp = 0;
	string result = "";
	for(int i = 0 ; i < s.size() ; ++i)
	{
		if(s[i] >= '0' && s[i] <= '9')
			temp = temp * 10 + (s[i] - '0');
		else if(s[i] != ' ') 
			result += s[i];
		else continue;
	}	
	return result;
}

void __init()
{
	memset(_stack, 0, sizeof(_stack));
	topPos = 0;
	return ;
}